Oct. 5, 1789: Five months after George Washington takes the oath of office at Federal Hall on Wall Street, the new president checks out two books from the New York Society Library. The library was located in the same building as the president's office, in what was then the nation's capital. In a ledger, next to the names of the books — The Law of Nations by Emmerich de Vattel and Vol. 12 of the Commons Debates, containing transcripts from Britain's House of Commons — the librarian writes, "President."

1934: The missing ledger is found in a pile of trash in the basement of the library's fourth home, at 109 University Place in Manhattan. The library can find no evidence that Washington's books were ever returned.

April 16, 2010: Archivist Matthew Haugen stumbles upon the New York Society Library's long-lost 14-volume collection of the Commons Debates. Volume 12 — the one checked out by Washington — is missing, confirming the staff's secretly held suspicion that Washington never returned the books. The fine, adjusted for inflation, amounts to about $300,000. "We're not actively pursuing the overdue fines," says head librarian Mark Bartlett. "But we would be very happy if we were able to get the books back."

May 20, 2010: Mount Vernon staff returns a copy of The Law of Nations to the New York Society Library. After hearing of the missing books, employees at Washington's estate were unable to locate either of them. But they found an identical Law of Nations online for about $12,000. "We express our gratitude for your patience... and for your generosity in erasing the considerable funds that were probably owed by George Washington," James Rees, executive director of Washington's Mount Vernon Estate, told library staff. "He did not do his public duty." Nonetheless, the library has absolved Washington "and his representatives" of all fines.